Pitot-Heater
Hello,
I am trying to build a simulation software which simulates the airspeed indicator. The documents I have didn't help much about the pitot-heater though.
Could anybody tell me what the airspeed indicator is supposed to show when the pitot-heater is not on ?
I understand that the pitot-heater is only needed on cold environments. Is there a regulation or a rule of thumb which tells how cold it should be to use the pitot-heater ?
Thanks a lot in advance,
MDE